cpupower: Do not change the frequency of offline cpu
Check if the cpu is online before changing the frequency/governor of the cpu. Reported-by: Pavaman Subramaniyam <pavsubra@linux.vnet.ibm.com> Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Acked-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -17,6 +17,7 @@
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#include "cpufreq.h"
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#include "helpers/helpers.h"
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#include "helpers/sysfs.h"
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#define NORM_FREQ_LEN 32
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@ -318,6 +319,9 @@ int cmd_freq_set(int argc, char **argv)
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cpufreq_cpu_exists(cpu))
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continue;
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if (sysfs_is_cpu_online(cpu) != 1)
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continue;
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printf(_("Setting cpu: %d\n"), cpu);
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ret = do_one_cpu(cpu, &new_pol, freq, policychange);
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if (ret) {
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